Dual component cartridge

A cartridge for use in a dispensing gun for simultaneously dispensing two fluid components contained separately in said cartridge, said cartridge including:

• a body having a forward discharge end and a rear end, and first and second chambers for containing the two fluid components separate from each other prior to dispensing said components from said chambers, said first chamber being formed by a substantially cylindrical wall extending coaxially throughout the second chamber;
• a dispensing nozzle extending from the forward end of the body;
• first and second pistons located within the first and second chambers, respectively, and movable from adjacent the rear end of the body toward the discharge end for simultaneously discharging the two fluid components from interiors of said chambers and outwardly through the nozzle, said second piston being annular and slidably movable along the exterior of the cylindrical wall of the inner chamber;
• a collapsible container formed of a thin flexible film for storing a first fluid component of said two fluid components within the first chamber;
• and
• said first and second pistons having outer end faces with the outer end face of the first piston being spaced rearwardly from the outer end face of the second piston providing means for forming a void space in the first chamber adjacent the forward end of the body having a sufficient volume for collecting the flexible film therein after both outer end faces of the pistons simultaneously reach said forward end to dispense substantially all of the fluid components from the chambers and the first piston has compacted the film in said void space.

A cartridge for use in a dispensing gun for simultaneously dispensing two fluid components contained separately in said cartridge, said cartridge including:

• a body having a forward discharge end wall and a rear end, and first and second chambers for containing the two fluid components separate from each other prior to dispensing said components from said chambers, said first chamber being formed by a substantially cylindrical wall extending coaxially throughout the second chamber;
• a dispensing nozzle extending from the forward end of the body;
• first and second pistons located within the first and second chambers, respectively, and movable from adjacent the rear end of the body toward the discharge end for simultaneously discharging the two fluid components from interiors of said chambers and outwardly through the nozzle, said second piston being annular and slidably movable along the exterior of the cylindrical wall of the inner chamber;
• a collapsible container formed of a thin flexible film for storing a first fluid component of said two fluid components within the first chamber;
• and
• said first chamber extending forwardly beyond the end wall of the cartridge body a sufficient distance forming a void space in the first chamber adjacent the forward end of the body having a sufficient volume for collecting the flexible film therein after both of the pistons have reached said forward end to dispense substantially all of the fluid components from the chambers and the first piston has compacted the film in said void space.

A cartridge for use in a dispensing gun for simultaneously dispensing two fluid components contained separately in said cartridge, said cartridge including:

• a body having a forward discharge end and a rear end, and first and second chambers for containing the two fluid components separate from each other prior to dispensing said components from said chambers, said first and second chambers having cylindrical interiors which extend in a longitudinally extending side-by-side relationship with respect to each other;
• a dispensing nozzle extending from the forward end of the body;
• first and second pistons located within the first and second chambers, respectively, and movable from adjacent the rear end of the body toward the discharge end for simultaneously discharging the two fluid components from interiors of said chambers and outwardly through the nozzle;
• a collapsible container formed of a thin flexible film for storing a first fluid component of said two fluid components within the first chamber;
• and
• said first chamber extending forwardly beyond the second chamber a sufficient distance to form a void space forwardly of a forward end face of the first piston upon both of said pistons reaching the forward discharge end of the cartridge body, said void space having a sufficient volume for collecting the flexible film therein after both of the pistons have reached said forward end to dispense substantially all of the fluid components from the chambers and the first piston has compacted the film in said void space.

A cartridge for use in a dispensing gun for simultaneously dispensing two fluid components contained separately in said cartridge, said cartridge including:

• a body having a forward discharge end and a rear end, and first and second chambers for containing the two fluid components separate from each other prior to dispensing said components from said chambers;
• a dispensing nozzle extending from the forward end of the body;
• first and second pistons, each having an end face, located within the first and second chambers, respectively, and movable from adjacent the rear end of the body toward the discharge end for simultaneously discharging the two fluid components from interiors of said chambers and outwardly through the nozzle;
• a collapsible container formed of a thin flexible film for storing a first fluid component of said two fluid components within the first chamber;
• and
• said end face of the first piston being rearward of the end face of the second piston to form a void space in the first chamber adjacent the forward end of the body having a sufficient volume for collecting the flexible film therein after both of the pistons have reached said forward end to dispense substantially all of the fluid components from the chambers and the first piston has compacted the film in said void space.